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The final three competitors sang their hearts out Monday in the hopes of winning America's votes, and ultimately being named "The Voice."

Ahead of a star-studded finale set for Tuesday night, Christina Grimmie kicked off the penultimate episode of "The Voice" by singing the Miley Cyrus hit, "Wrecking Ball." The song was America’s pick for Christina’s repeat performance, after viewers voted on what past song they wanted to see again -- this time around she stepped it up a notch, complete with fireworks and a backdrop of flashing lights.

"The Voice": Greatest Moments

“I’m not surprised at all that’s the song America picked for you to sing,” said Blake Shelton. “You have the opportunity to hit all those big notes that you can do and that’s the Christina I’ve been excited about every time you get on that stage.”

Her coach Adam Levine also noted that watching her perform the song again was a good reflection of her transformation as an artist.

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"I'm just bursting with pride for you," he said.

Her second performance only brought her transformation even farther when she came back with her own rendition of Elvis Presley’s “Can’t Help Falling in Love.”

Starting out a cappella and finishing by showing off her dynamic range, coach Adam was brought to his feet.

“When I think about what epitomizes the winner on this show it’s the artistry, it’s the fearlessness and every step of the way this girl has made all the choices on her own,” Adam said. “I think that this is yours, you’re going to win this show.”

Shakira, who has no artists in the final three, said, “That was flawless. I was in complete awe, I mean, wow, this wasn’t a conservative choice or an obvious choice and I think that’s your trademark.”

Adam and Christina also got to perform together on stage singing, Gotye’s “Somebody That I Used to Know.”

Country singing teen Jake Worthington came full circle by the end of the night by singing America’s pick, “Don’t Close Your Eyes,” by Keith Whitely, which was the song he sang at his first performance of the season – during his blind audition.

Jake serenaded the crowd by playing his guitar to accompany his confident vocals.

The coaches all spoke about Jake’s growth as a singer, noting that no chairs turned around for him when he competed in the blind auditions of the previous "Voice" season.

“It’s because of your hard work and because of your gumption you continue to grow,” said Usher.

Coach Blake showed his appreciation as a fellow country artist, happy to see his artist singing 80’s classics, regardless of Jake being 17 years old.

“The fact that you continue to throw it back to those guys in country music,” said Blake, “I love that about you, and I thank you as a country artist.”

Jake’s second performance was another flashback to the 80s with an emotional performance of Richard Marks’ “Right Here Waiting.”

Usher, as an R&B artist even related to the young country hopeful because of his conviction when he sang.

"A song like that is all about the emotion," Usher said of Jake's interpretation of the song, "and being able to identify with that right there is a trait I love."

Blake delivered the ultimate compliment by saying, “In six seasons of being coach on this show, I don’t think there’s been a more sincere messenger of a lyric than you.”

Dubbed “Blake and Jake” by the end of the episode, the two sang a duet of “Country Folks Can Survive,” by Hank Williams Jr.

Soulful singer Josh Kaufman took the stage for the first time in the finals to sing the voter’s pick of “Sign Sealed Delivered,” by Stevie Wonder.

The upbeat performance was bittersweet for Coach Adam, as he was reminded of the night he lost Josh to Coach Usher in the battle rounds.

Host Carson Daly even commented on his energy at the end of his performance, saying, “It was like you were possessed in the last four minutes.”

Usher gave Josh a standing ovation and said his unique soulful sound is what the show needs.

“He has the ability to change ‘The Voice,' he is ‘The Voice.”

Josh finished out the show with a performance of Adele’s “Set Fire to the Rain,” which ended with the singer dropping to his knees with emotion. A song which started softly, ended with pyrotechnic effects and a fierce orchestra accompaniment.

"You're super amazing," was all Adam could say among the continously cheering audience.

"This is the representation of what 'The Voice' is," said Coach Usher. "You are the winner of this competition," he said.

The coaches also got their time to perform. Shakira and Blake sang the title track of Shakira's album, "Medicine," and Adam and Usher sang D'Angelo's "How Does it Feel." On Tuesday night, Coldplay, OneRepublic, Tim McGraw and Ed Sheeran will perform live.

With the fate of the final three now in the hands of the viewers, tune in for the finale to see who will ultimately be named "The Voice."